Black Domino/en

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Instructions

BlackDomino puz.png    BlackDomino sol.png


Place one black domino (2x1) in each of 8 outlined areas to get exactly 4 colored (gray and black) cells in each row and column. The dominoes cannot touch each other even by corner.






History

Invented by Olga Leontieva (Russia). Used in WPC 2010 Poland.

 
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